<!doctype html>
<title>Allow text fragments in HTML documents only</title>
<meta charset=utf-8>
<meta name="timeout" content="long">
<link rel="help" href="https://wicg.github.io/ScrollToTextFragment/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/common/utils.js"></script>
<script src="stash.js"></script>

<script>
function rAF(win) {
  return new Promise((resolve) => {
    win.requestAnimationFrame(resolve);
  });
}

function openPopup(url) {
  return new Promise((resolve) => {
    test_driver.bless('Open a URL with a text fragment directive', () => {
      const popup = window.open(url, '_blank', 'width=300,height=300');
      popup.onload = () => resolve(popup);
    });
  });
}

const test_cases = [
  {
    filename: 'text-html.html',
    expected: 'allowed',
  },
  {
    filename: 'text-css.css',
    expected: 'blocked',
  },
  {
    filename: 'text-javascript.js',
    expected: 'blocked',
  },
  {
    filename: 'text-plain.txt',
    expected: 'allowed',
  },
  {
    filename: 'application-xml.xml',
    expected: 'blocked',
  },
];

for (let test_case of test_cases) {
  const filename = test_case.filename;
  const expected = test_case.expected;
  const mediaType = filename.split('.')[0].replace('-', '/');

  promise_test(async function (t) {
    const popup = await openPopup(`resources/${filename}#:~:text=target`);

    // The WPT server should provide the correct content-type header from the
    // file extension.
    assert_equals(popup.document.contentType, mediaType);

    // rAF twice in case there is any asynchronicity in scrolling to the target.
    await rAF(popup);
    await rAF(popup);

    const did_scroll = popup.scrollY > 0;
    const expected_scroll = expected == 'allowed';
    assert_equals(did_scroll, expected_scroll, 'scrolled to fragment');

    popup.close();
  }, `Text directive ${expected} in ${mediaType}`);
}

</script>
